<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="jquery-3.1.1.js"></script>
</head>
<body>

<p class="c1">P1</p>
<p class="c1">P2</p>
<p class="c1">P3</p>


</body>
</html>